Access The Page Object In Global.asax In The PreRequestHandlerExecute
May 31, 2010
I have a huge website (containing around 5000+) pages. There is a theme functionality in the website where user can choose different colors for their profile. Now i want to use the ASP.net theme feature and put different CSS (for different colors) in the theme folder and in Global.asax i want check the user theme and render appropriate link element with the css. But my problem is, i am not able to access the Page element for adding the link in the page. Here is my code
Dim page As System.Web.UI.Page = TryCast(System.Web.HttpContext.Current.Handler,System.Web.UI.Page)
page.StyleSheetTheme = "Black"
But when i run this code I get a Null reference error.
P.s : My application is very huge so its not possible to have a master page or a base class and inherit it in every page.
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May 21, 2009
I have a Sub procedure (say: my_sub() ) in one of my aspx.vb (say: mypage.aspx.vb) pages and I want to call this Sub inside the Session_End event in the Global.asax page.
Somthing like this:
Sub Session_End(ByVal sender
As
Object,
ByVal e
[Code]....
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Sep 17, 2009
In Global.asax, is there a way to handle SQL Timeouts elegantly, and display a message on the requesting page explaining the error? I know Global.asax has the Application_Error and Error events, but I'm not sure which (if any) I could use to accomplish this.
Related, can I access the page instance which raised the error that Global.asax is handling?
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Dec 14, 2010
I need to add the code below to my global.asax file. It begins with a Sub Application_BeginRequest . My global.asax already has a section that begins with Protected Sub Application_BeginRequest(ByVal sender As Object, ByVal e As System.EventArgs) I'm assuming that I should not have two sections with Sub Application_BeginRequest I tried putting the core of the new code into my existing Sub Application_BeginRequest and it returns no errors but it when I try to view the website in VWDE 2010 it times out. Something is causing it to run or load slowly.
This is the code that I'm adding:
<script runat="server">
Sub Application_BeginRequest(ByVal sender As Object, ByVal e As EventArgs)
Dim url = String.Empty
[code]....
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Mar 4, 2009
I've been given the thrilling task of re-writing our exception handling system. Whilst I will state that handling exceptions from an application-wide point of view isn't something we want, typically it's unavoidable when our team are understaffed for the sheer amount of work we need to push out the door, so please, no flaming the globalised solution to exception handling here
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Apr 2, 2012
I'm trying to make some friendlyurls in my vb.net (.net 4) project and I'm trying to do it using something I read about global.asax and Application_Beginrequest but I can't get it to compile.
[Code]...
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Nov 9, 2008
i have a project with 1 main form, in form load i call 4 subs which call data from an api. I have added a splashscreen from the add form menu. The splashscreen displays first while the main form loads(calling api data)What i would to do is have a progress bar on the splashscreen with the progress of the mainform load.
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
SplashScreen1.ProgressBar1.Value = 0
updategeneral()
[code].....
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Mar 25, 2010
I need a function in global.asax file which gets called only once when user enter a page url. application_beginrequest gets called 50-60 times in a single page( as to render a page several requests go to server.)
i though of a solution - I can write my fucntion in global.asax and call it on page load of other pages but in that solution I need to call it in every page. I would prefer something which is to be done only in global.asax
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Aug 5, 2011
I would love to implement the asp.net routing but i have a basic question.
In my Generic handler i have the following Global class
Public Class MyHandlerRouteHandler : Implements IRouteHandler
Public Function GetHttpHandler(requestContext As System.Web.Routing.RequestContext) As System.Web.IHttpHandler Implements
[Code].....
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Sep 16, 2010
I'm trying to use the Global.asax file in the root application of the website to catch requests for pdf files in the root that don't exist any more. I've configured iis to send pdf requests to asp.net. The whole thing works perfectly on development. It also works on the live system with missing .aspx pages, but not .pdf. Instead an "Error Code 64: Host not available". I'm using the Global.asax file to avoid the web.config and child applications (1.1 & 2.0) inheriting settings.[code]...
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Mar 21, 2012
I was wondering if there was a way to catch all unhandled exceptions in a visual studio project. My project does not have any files named global or global.asax so I was wondering if there was some other way to catch any and all unhandled exceptions? So far I've tried to put exception handling around specific blocks of code, but it doesn't have any effect.
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Nov 3, 2010
So I handle all exceptions in my project within my Global.asax page. For example, on a random page I could have:[code]So my question is in the Application_Error method, do I need the try/catch block when trying to write to the database? I'm thinking I would in case something goes wrong with the connection, etc. - but is this really necessary? Also, what would I do in the catch block if there is an error? At that point I would be catching the error of logging an error which is confusing in its own right.
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Apr 12, 2010
Normally I just redirect to a custom error page in on the Application_Error event, but I have a specific error for which I'd like to display an alert message while the user is still on the page which triggers the error. How can I make this happen?
I'm open to a modalpopup or any other type of error message, I just want to ensure the user stays on the page where they encounter the error.
This is in reference to this thread: [URL]
Here is the code I'm currently using:
Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
'Code that runs when an unhandled error occurs
Try
[Code]....
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Jun 2, 2010
I am handling errors via my global.asax in this method:
Dim CurrentException As Exception
CurrentException = Server.GetLastError()
Dim LogFilePath As String = Server.MapPath("~/Error/" & DateTime.Now.ToString("dd-MM-yy.HH.mm") & ".txt")
Dim sw As System.IO.StreamWriter = New System.IO.StreamWriter(LogFilePath)
[code]....
In my code I currently have no other error handling. Should I still insert try, catch, finally blocks?
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Jun 7, 2011
I am having an issue where the I am trying to use some Regular Expression in a constraint. The issue is it is evaluating the Regex as a string, and throwing an error. "Cannot convert String 'd+' to long".
.MapPageRoute("Parts",
"{PartName}/{Part}/",
"~/Inventory/Default.aspx",
Nothing,
New RouteValueDictionary(New With
{.Part = "d+"}))
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Mar 15, 2012
evrytime i add new controls to a form in vb.net the designer regenerates code and asks me to make corrections, so i have to keep on changing the object declarations to global using the 'global' keyword evertime it regenarates code,especialy dataset objects.how can i prevent this?
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Sep 24, 2010
C# or VB.NET are welcome. I have an <%#Eval("FirstName")%> in the aspx page, I want to replace "FirstName" to <%#Eval(employee.FirstName)%> but "employee" object is instantiated in the codebehind like this:
Public employee As New Employee How can I call this object in the aspx page? Should I can create an "employee" in the aspx? if so, how to do that.
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Oct 26, 2009
I have an object that is defined as a global variable based on custom class. Within that class I have an event that gets fired a certain intervals. These events are fired on the same thread as where the object is declared. How do I create a global object, but have the events within that object fire on a separate thread?
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Oct 5, 2010
I wrote a page Page method in my aspx page. in web service method I need to call FindControl method return textbox and get text box value. But my findControl will take MasterPage object to iterate.
see my code
<script type = "text/javascript">
function ShowCurrentDateTime() {
$.ajax({
[Code]....
How to pass Master Page object or Page to Page method?. So I can use in Sared method.
Is there any way I can access Textbox value directly in Page method? I need access couple of controls in Page Method.
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Mar 29, 2012
I have 2 web pages. In the first webpage I have a text box which takes an user input.The number of controls rendered in the second page is based on the user input in the first page.I am storing the user input from the first page as a session variable [code]Now, I wish to use this session variable in the next page for initializing a global variable and what I tried to do is Dim num_Invitees As Integer = CType (Session("NoOfControls ToGenerate"),Integer)But this gives me a NullReferenceException.Can someone please suggest me what exactly I should be doing in order to use the session variable to initialize a global variable and also why the session variable's value is null while using outside a function but works fine when used inside a function?
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Apr 1, 2011
I'm trying to build a language dictionary in VB NET in order to be able to have several languages in the application.This dictionary has a init method that loads from database the entire dictionary and stores it in memory.In the rest of the classes of the project, I added the reference and I can use directly the object without create a new instance because their methods are shared.
how i have to load the dictionary content in order that the rest of classes only accessing to Language.GetWord method obtains the properly record of the collection, same way as My.Settings class.When My.Settings is used from any class the values are loaded. I'm looking for the same effect.This is the code of the class:
Public Class LanguageProvider
Private Shared CurrentLanguage As Collection
Public Shared ReadOnly Property GetWord(ByVal Label As String)
[code]....
Function LoadLanguage must be called when the application loads, in order to access once to database. After that property GetWord must access to the collection with the words and return the result. The problem is that the instances are not the same and the dictionary is not loaded when a class uses it.
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Jun 8, 2012
I would like to declare a list above Sub procedure and to be able to add/modify it. I would like to have something like this:
[Code]....
When i run the above example i get an error like: Object reference not set to an instance of an object.
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Sep 9, 2011
I have an asp image within my "default.aspx" page.I set cookies on my masterpage vb file and depending on the cookie set, I want to show or hide this image.
default.aspx
<asp:image ImageUrl="/images/myimage.jpg" runat="server" ID="myimage" Visible="false"></asp:image>
mymaster.aspx.vb
[code]....
I get the following error:
'myimage' is not declared. It may be inaccessible due to its protection level.
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Jun 15, 2009
What is the recommended way in VS.NET to have a global application handler object? Something that can load/verify/return user folders, settings, application specfic settings, manage the unhandled exceptions, etc. I would have a class that has most of the code, then subclass it for each application.
I can create one if I start as a module instead of a form. But then I lose some options such as NetworkAvailabilityChanged, etc. I define a "Public" object from within a form (I don't think so and don't feel this would be the right approach.)?can I "attach" an object to an existing global object store (such as "My."), etc.?
Once created, any object in my application should be able to reference methods/properties of this application object to get default folders, user values, etc. as necessary.
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Feb 24, 2011
This is also posted in the database development forum. As I think the same problem could apply to things other than connections, I am posting it here also. I have created a custom class. All methods in this class, I want to interact with a single connection object.
Imports MySql.Data.MySqlClient
Public Class clsRegTester
Private cn As New MySqlConnection
[code].....
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Jun 17, 2009
I need a single, global OleDbConnection. One which will be available to use throughout my app/project. Another project like a custom UserControl? I should mention I'm not using TableAdapters, BindingNavigitor, etc. The datasource is not associated with my project. I communicate with the Db through code I write. I'm just a hack trying to ride with the big dogs while I develop an app for my job... We were/are in the stone-age!!!
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Sep 21, 2011
If we declare a global variable in module in vb.net, we can use that variable in anywhere in project.
How can we achieve same thing in C#.
Previously when we tried to convert a vb.net project to C#, we succeeded in removing the syntax error but we can't access global variable in a form.
I need some solution or guidance. Where I am making a mistake?
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Jun 21, 2010
I need regarding declarations of global variable.. I created a module here is the script.
[Code]...
and then I set the value of that variable in my Login form and then my PROBLEM is when accessing it on the my Main form and I want to display the data of that variable in a textbox, the variable does'nt hold the value that I already set. I'm waiting for replies!
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Mar 24, 2010
Usually when you add one (in Visual Basic), it pops up a message asking if you want to enable an option that lets the test access things like private methods etc.
However, I am editing a solution that does not have this enabled. I'd like to enable it so my unit tests will work, but I can't find the setting.
Can anyone tell me how to enable it after the project has been created?
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Jul 15, 2010
Get the value of Global variable in javascript [code]...
so want to access "a" in code behind as it's global varible
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